.Space_demo{
    hr{
        height: 10px;
    }
    //
    .SpaceSize2{
        .space-align-container{
            display: flex;
            align-item: flex-start;
            flex-wrap: wrap;
        }
        .space-align-block {
            margin: 8px 4px;
            border: 1px solid #40a9ff;
            padding: 4px;
            flex: none;
        }
        .space-align-block .mock-block {
            display: inline-block;
            padding: 32px 8px 16px;
            background: rgba(150, 150, 150, 0.2);
        }
    }
}